JPS54116583A - Controller with back-up mechanism - Google Patents

Controller with back-up mechanism

Info

Publication number
JPS54116583A
JPS54116583A JP2318978A JP2318978A JPS54116583A JP S54116583 A JPS54116583 A JP S54116583A JP 2318978 A JP2318978 A JP 2318978A JP 2318978 A JP2318978 A JP 2318978A JP S54116583 A JPS54116583 A JP S54116583A
Authority
JP
Japan
Prior art keywords
control
backup
automatic
manual
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2318978A
Other languages
Japanese (ja)
Inventor
Takashi Kawazoe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimadzu Corp
Original Assignee
Shimadzu Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP2318978A priority Critical patent/JPS54116583A/en
Publication of JPS54116583A publication Critical patent/JPS54116583A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enable a changeover of operations between automatic. manual and backup always in balanceless and automatically, and further enable a backup operation in the same handling manner as at the time of automatic. manual operation also for the operator.
CONSTITUTION: An arithmetic control 1 of the controller in the process control is effected a relational operation of the process signal from a transmission line 13 and the set value from a setter 11, with its control signal given to a control object 14 like control valves normally through lines a-c of a switching circuit 3. With a backup amplifier 2 provided in the device, the constitution is made such that normally through a line 5, the tracking is operated for a control signal of the arithmetic control 1, and a the time of backup operation, the arithmetic control 1 is to operate the tracking for an output signal of the amplifier 2 by a line 4. And an alarm device 12 is provided for signaling an alarm by comparing a process signal with the above described set value, simultaneously with a selector switch 9 provided for automatic A, manual M, backup B.
COPYRIGHT: (C)1979,JPO&Japio
JP2318978A 1978-02-28 1978-02-28 Controller with back-up mechanism Pending JPS54116583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2318978A JPS54116583A (en) 1978-02-28 1978-02-28 Controller with back-up mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2318978A JPS54116583A (en) 1978-02-28 1978-02-28 Controller with back-up mechanism

Publications (1)

Publication Number Publication Date
JPS54116583A true JPS54116583A (en) 1979-09-10

Family

ID=12103702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2318978A Pending JPS54116583A (en) 1978-02-28 1978-02-28 Controller with back-up mechanism

Country Status (1)

Country Link
JP (1) JPS54116583A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57131701U (en) * 1981-02-10 1982-08-17
JPS60207903A (en) * 1984-03-31 1985-10-19 Toshiba Corp Backup system of digital controller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57131701U (en) * 1981-02-10 1982-08-17
JPS60207903A (en) * 1984-03-31 1985-10-19 Toshiba Corp Backup system of digital controller
JPH0545961B2 (en) * 1984-03-31 1993-07-12 Tokyo Shibaura Electric Co

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